Update otpclient to version 2.6.0 / rev 15 via SR 986337
    
    https://build.opensuse.org/request/show/986337
    by user polslinux + dimstar_suse
    - Update to 2.6.0:
      * It's now possible to import SVG tokens (in addition to PNG ones).
      * Add support for importing and exporting encrypted Aegis backups.
      * Add support for importing Google migration QR codes (hamburger menu -> import -> Google migration QR).
        You need to provide the QR file (e.g. by taking a screenshot with the webcam or another phone).
      * Fix andOTP import bug.
      * Improve row deletion workflow.
      * Add support for libsecret. By default, the password is saved into the secret service provider of your OS.
        This means that you won't be required a password as long as you're logged in. You can disable this feature from the settings menu.
      * Show a video feed when adding a QR using the webcam.